水溶性加工液の多重リサイクル使用に関する研究

抄録

To reduce the environmental load of waste treatment of water-soluble coolants, we have been developing a recycling system for waste water-soluble coolant. In the system, a water extracted from waste coolant is reutilized of a diluent for a new coolant. We developed some chemical and biochemical water recycling method. It was found that a surfactant and powdered activated carbon water recycling process was suitable for a commercially available amine-free cutting coolant. The processing time and quality of the extracted water were better those that of an amine-containing coolant. In this report, we focused on multiple recycling process to the coolant. We repeatedly applied the water recycling process to the recycled coolant. The recyclability of the amine-free coolant was not affected by multiple recycling; however, process residues increased with the number of recycles.